Hey guys. I managed to install NeXTSTEP 3.3 on my Toshiba Satellite 4000CDT.
I installed the 2000.Xircom.Realport.1.00.I.bs and configured my network info using the HostManager.app (in the 'Local...' menu)

After entering my network info I reboot the machine and it takes a long while to "mount remote filesystems" then it hangs entirely at "starting file service daemons".
After an hour or two I'll continue by pressing ^C but this ultimately leads to a blank screen with a mouse cursor.

To get back into the system again I have to boot using 'mach_kernel -s' and restore the network settings via the following commands: